Unlawful Sex

As for those women among you who commit a grave indecency, call upon four witnesses from among yourselves to testify against them. If they bear witness, then confine those women to their homes, until death claims them, or Allah opens for them a path forward.

4:15As for those of your women who are guilty of lewdness, call to witness four of you against them. And if they testify (to the truth of the allegation) then confine them to the houses until death take them or (until) Allah appoint for them a way (through new legislation).

As for those who accuse their own spouses but have no witnesses but themselves, let one of them testify four times by Allah that he is telling the truth

24:6As for those who accuse their wives but have no witnesses except themselves; let the testimony of one of them be four testimonies, (swearing) by Allah that he is of those who speak the truth;

And the fifth time, call down Allah’s curse upon himself if he is lying.

24:7And yet a fifth, invoking the curse of Allah on him if he is of those who lie.

The woman and man guilty of adultery, lash each of them a hundred times. Let no compassion for them deter you from Allah’s law, if you truly believe in Allah and the Last Day. And let a group of believers witness their punishment.

24:2The adulterer and the adulteress, scourge ye each one of them (with) a hundred stripes. And let not pity for the twain withhold you from obedience to Allah, if ye believe in Allah and the Last Day. And let a party of believers witness their punishment.

The adulterer shall marry none but an adulteress or an idolater; and the adulteress shall marry none but an adulterer or an idolater. This is forbidden to the believers.

24:3The adulterer shall not marry save an adulteress or an idolatress, and the adulteress none shall marry save an adulterer or an idolater. All that is forbidden unto believers.